CN102023464A - Projection display device and manufacturing method thereof - Google Patents
Projection display device and manufacturing method thereof Download PDFInfo
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- CN102023464A CN102023464A CN2009101953899A CN200910195389A CN102023464A CN 102023464 A CN102023464 A CN 102023464A CN 2009101953899 A CN2009101953899 A CN 2009101953899A CN 200910195389 A CN200910195389 A CN 200910195389A CN 102023464 A CN102023464 A CN 102023464A
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Abstract
The invention provides a projection display device and a manufacturing method thereof. The device comprises a light emitting diode (LED) optical source, a panel having a photoswitch function such as a liquid crystal box and a digital micromirror, a colour luminescence sheet which has a photoluminescent function and is opposite to the optical source, and a projection optical system. The invention provides colour projection display technology in which the wavelength conversion is completed by combining a high-energy LED optical source and a photoluminescent material and is combined with the photoswitch, and the manufacturing method thereof. Compared with the display technology in which an absorption type colour filter is used, the projection display technology can increase the utilization ratio of light, expand the display region, reduce the manufacturing process and reduce the cost.
Description
Technical field
The present invention relates to projection display device, especially relate to the projection display device that adopts monochromatic source and photo-luminescent sheet.
Technical background
Projection display device mainly contains liquid crystal (LCD) projection and digit optical processes and displays (DLP) at present.
The principle of crystal projection be light beam irradiates that light source is sent at small-sized liquid crystal cell, again with the image that forms on this element with the projection optical system enlarging projection to screen.
It is a kind of reflection device that the digit optical processes and displays is called for short DLP, and it has the optical efficiency above 60%, and this efficient is that reflectivity, fill factor, curve factor, diffraction efficiency and actual eyeglass " are opened " result that the time produces.LCD depends on polarization, so wherein half polarized light does not utilize.Except the loss of these light, liquid crystal material itself has absorbed a part of light, and the result has only a small part incident light to see through the LCD panel to shine on the screen, so light utilization efficiency is very low.
DLP shows abbreviation DMD based on reflective digital micro-mirror, does not need polarized light.At last, the sealing micro-reflector at interval seamless image that video image projected into have higher apparent resolution.A DMD can simply be described as being a semiconductor optical switch.Thousands of small square 14 μ m * 14 μ m eyeglasses are built upon on the hinge arrangement of static random access memory (SRAM) top and form DMD.Each eyeglass can a pixel of break-make light.Hinge arrangement allows eyeglass to tilt between two states, and+12 degree are " opening ", and-12 degree are " passs ", and when eyeglass was done on not, they were in 0 closed condition of spending.According to the needs of using, a DLP system can receive numeral or simulating signal.Simulating signal can be converted to digital signal DLP's or in the front-end processing of original equipment manufacturer, and any interlaced video signal is handled by interpolation and is converted into a full graphics frame video signal.Signal becomes advanced red, green, blue (RGB) data by the DLP Video processing, and advanced RGB data are formatted as the plane of whole binary data then.In case video or figure signal are under a kind of digital format, just are admitted to DMD.Each pixel of information by on the eyeglass that directly is mapped in it, provides exact figure control according to 1: 1 ratio, if signal is 640 * 480 pixels, 640 * 480 eyeglasses of device central authorities are taked action.This extra-regional other eyeglass is incited somebody to action the position that is placed in " pass " simply.
Carry out electronic addressing by the storage unit under each eyeglass is advanced horizontalization face signal with two, each eyeglass on the dmd array by with the electrostatic means inclination for opening or closing attitude.Determine which direction each eyeglass is tilted on to be called as pulse-length modulation (PWM) for technology how long.Eyeglass can be in one second switch more than 1000 time, this quickish speed allows digital gray scale grade and color reproduction.After collector lens and color filter system, from the light of projection lamp by direct irradiation on DMD.When on the position that eyeglass is being opened, they reflect light to the square pixel projected image that forms a numeral on the screen by projecting lens.
Other element of DLP projector comprises a light source, a color filter system, cooling system, DMD, illumination and a projection optics element.DMD and liquid crystal are exactly the light switch function element, also claim light valve.
At present the DLP projection products of selling has three types: monolithic DLP system, three DLP systems and biplate DLP system.In a single DMD optical projection system, produce the full color projected image with a colour wheel.Colour wheel is by one three kinds of color filters of red, green, blue to be constituted a disk, and it rotates with the frequency more than the 60Hz, and per second provides 180 above colour fields.Input signal is converted into the RGB data, and data write the storer of DMD in order.White light source focuses on the colour wheel by condenser lens, is imaged on the surface of DMD then by the light of colour wheel.When colour wheel rotated, red, green, blue was sequentially penetrated on DMD.Colour wheel and video image are in sequence, so when ruddiness was mapped on the DMD, eyeglass tilted to " opening " according to position and the intensity that red information should show, green and blue light and vision signal also are work like this.Human vision system is concentrated red, green, blue information and is seen a full-color image.By projecting lens, on image projection to a giant-screen that forms on the DMD surface.
The light source of projection display system has extra-high-pressure mercury vapour lamp, metal halide lamp, xenon lamp and Halogen lamp LED.These light sources are white light, white light are separated into red (R), green (G), blue (B) three primary colours light in present Projection Display earlier, by light valve (liquid crystal, DMD) after, combined color image appears through ovennodulation; The look that carries out of white light is separated employing colour wheel or prism.
In the projector that adopts colour wheel, the utilization factor of light has only 1/3rd; Adopt in the projector of prism optical system complexity, cost height.
The invention provides a kind of method, adopt ultraviolet light, purple light, royal purple light, blue light, green glow monochrome or double-colored light source, light valve (liquid crystal, DMD) back is provided with photo-luminescent sheet, photo-luminescent sheet is that embedded photoluminescent material is made, allow monochromatic light exciting light electroluminescent material send red (R), green (G), blue (B) three primary colours light, or red (R), green (G), blue (B), orange-colored light, project to and form image on the screen; Can improve light utilization efficiency like this, simple in structure, reduce cost.
Summary of the invention
In order to achieve the above object, light source of the present invention is to adopt monochromatic source or the double-colored light source of wavelength 300 nanometers to 650 nanometers, come the exciting light electroluminescent material, embedded photoluminescent material is hydrocarbon or inorganic material and both potpourris composition, improve light utilization efficiency like this, obtain red (R), green (G), blue (B) three primary colours light by monochromatic light exciting light electroluminescent material.
The manufacture method of the photo-luminescent sheet that the present invention mentions is compared with DLP with the liquid crystal of reporting in the past, it is characterized in that using the colored hair mating plate with photoluminescence property to substitute original absorption-type colored filter.
In light path the photo-luminescent sheet of the colour wheel in the similar existing projector is set, this photo-luminescent sheet is divided into several photoluminescences district, different photoluminescences district adopts the embedded photoluminescent material of different emission, this photo-luminescent sheet can be embedded photoluminescent material at the propping material surface filming, propping material is glass or resin; Also can make crystal by inorganic embedded photoluminescent material.It is fan-shaped that emission wavelength is that red (R), green (G), blue (B) light tiles are made as respectively, and synthetic annulus, and annulus and servomotor are bonded together, and photo-luminescent sheet is along with motor rotates.
Scheme 1
Light source adopts blue light as light source, the photo-luminescent sheet of rotation is set on light path, blue-light excited red light district, blue-light excited green Region and blue light are set respectively on photo-luminescent sheet see through the district, blue-light excited red light district, blue-light excited green Region are to be prepared on photo-luminescent sheet by embedded photoluminescent material, when the photo-luminescent sheet of blue light by rotation, blue-light excited ruddiness, excite green glow, see through blue light, produce red, green, blue successively, sequentially penetrate on light valves such as DMD or liquid crystal.Photo-luminescent sheet rotation and video image are in sequence, so when ruddiness was mapped on the light valve, eyeglass tilted to " opening " according to position and the intensity that red information should show, green and blue light and vision signal also are work like this.Human vision system is concentrated red, green, blue coloured light information and is seen a full-color image.By projecting lens, on image projection to a giant-screen that forms on light valves such as DMD or liquid crystal surface, improve light utilization efficiency and brightness like this.
Scheme 2
Light source adopts purple light or ultraviolet light as light source, purple light excited red light district, purple light excited green Region and purple light excited blue light region are set respectively on photo-luminescent sheet, when the photo-luminescent sheet of purple light by rotation, blue-light excited ruddiness, excite green glow, excite blue light, produce red, green, blue successively, sequentially penetrate on DMD or liquid crystal light valve.It is the same to form the image principle.
Scheme 3
Light source adopts blue green light LED as light source, the photo-luminescent sheet of rotation is set in light path, green glow excites red light district, green glow to see through the district through district and blue light respectively on photo-luminescent sheet, when the photo-luminescent sheet of light by rotation, blue green light excites ruddiness, sees through green glow, blue light, produce red, green, blue successively, sequentially penetrate on DMD or liquid crystal.It is the same to form the image principle.
Scheme 4
Light source adopts blue ruddiness as light source, and ruddiness sees through district, blue-light excited green Region and blue light and sees through the district respectively on photo-luminescent sheet, when the photo-luminescent sheet of light by rotation, blue-light excited green glow sees through ruddiness, blue light, produce red, green, blue successively, sequentially penetrate on DMD or liquid crystal.It is the same to form the image principle.
Scheme 5
In like manner blue-light excited photoluminescence is applied in the projector of 2 DMD or reflection type liquid crystal, light source adopts blue light and ruddiness as light source, the rotation photo-luminescent sheet is set on blue light paths, photo-luminescent sheet is provided with blue light and sees through district and blue-light excited green Region, forming blue light and green glow is radiated on first DMD or the reflection type liquid crystal, on ruddiness direct irradiation another sheet DMD or the reflection type liquid crystal, eyeglass tilts to " opening " according to position and the intensity that RGB look information should show, human vision system is concentrated red, green, blue coloured light information and seen a full-color image.By projecting lens, on image projection to a giant-screen that forms on the DMD surface.
Luminous photic and manufacture method
Photoluminescence type or photoluminescence and partially absorb type colored hair mating plate and utilize the photoluminescence principle that light source luminescent is carried out changing under the color, be that luminescent film absorbs high-octane ultraviolet or bluish-green coloured light, send blue, green, red 3 primary lights, also can produce Neutral colour such as dark blue (DB), yellowish green (YG), yellow (YE) 6 primary colours, realize the colored demonstration of RGB or RGB-DBYGYE.
The characteristics of colored hair mating plate are that this is as luminophor, under exciting, peak value 350-400nm ultraviolet or 400-550nm blue-green monochrome or polychromatic light send visible light (380-780nm), luminescent material excite (excitation) spectrum have a peak and backlight ultraviolet or blue-green overlap of peaks at least, spectral half width is less than 70nm, and the conversion quantum efficiency is greater than 10%.
The colored hair mating plate is successively by embedded photoluminescent material, propping material, and filter layer is formed, and filter layer filters out the light of embedded photoluminescent material excitation wavelength, and propping material is by glass or inorganic fluorescent material or organic resin; Luminescent material is made by organic and inorganic, organic and inorganic mixture.The colored hair mating plate also can have the crystal of band defective to make, and the crystal of blue-light excited green-yellow light is the YAG crystal, crystal or ruby that blue-light excited ruddiness crystal is a sulfide.
Phosphor:
Blue phosphor comprises:
Its general formula of aluminate rare earth luminescent material be (Mel) (on the alkali metal 1 as Ba, Sr) (Me2) 2 (earth alkali metal 2 is as Mg) AlxOy (x=16, y=27)/Eu; (Me) (earth alkali metal such as Ba, Sr, Ca, Mg) AlxOy (x=2, y=4)/Eu; Its general formula of silicate rare earth luminescent material be (Mel) (earth alkali metal 1 is as Ba, Sr, Ca) (Me2) (earth alkali metal 2 is as Mg, Al) SixOy (x=2, y=6)/Eu; Y2SiO5/Ce; Its general formula of phosphate rare earth luminescent material is (Sr, Ca, Ba) 10 (PO4) 6Cl2/Eu; (Sr, Ca, Ba) 10 (PO4) 6Cl2B2O3/Eu; 3 (Sr, Ca, Ba) 3 (PO4) 2/Eu; LaPO4/Eu; Its general formula of sulfide luminescent material be (Zn, Ca, Sr) S (Se, O)/Ag (Ce, Tm, Eu), Ba (Mg) Al2S4/Eu etc.
Green phosphor comprises:
Its general formula of aluminate rare earth luminescent material be Me (earth alkali metal such as Mg) AlxOy (x=11, y=19)/Ce, Tb; Me (earth alkali metal such as Sr, Ba) AlxOy (as x=2, y=4)/Eu, Dy; Mel (earth alkali metal 1 is as Ba, Sr, Ca) Me2 (earth alkali metal 2 is as Mg) AlxOy (x=10, y=17)/Eu, Mn; Its general formula of silicate luminescent material be (Mel) (earth alkali metal 1 is as Ba, Sr, Ca) 2 (Me2) (earth alkali metal 2 is as Mg, Al) 2SixOy (x=2, y=8)/Eu; Zn2SiO4/Mn; Y2SiO5/Tb; Its general formula of phosphate rare earth luminescent material is La2O30.2SiO20.9P2O5/Ce, Tb; LaPO4/Ce, Tb; Its general formula of sulfide luminescent material be Zn (Ca, Sr) S/Cu (Ce, Tb); SrGa2S4/Eu, CaAl2S4/Eu; Green-yellow light material Y3Al5O12/Ce, ZnS/Mn etc.
Red phosphor comprises:
Oxygen (sulphur) is changed thing, and general formula is: Y (Gd) 2O3/Eu, Y2O2S/Eu, Sr (Ca, Zn) S/Eu (Sm); Ca (Sr) Y2S4/Eu, MgGa2O4Eu, its general formula of aluminate rare earth luminescent material is: Mel (earth alkali metal 1 is as Sr) Me2 (earth alkali metal 2 is as Ba) AlxOy/Eu, Mn etc.
The red, green, blue luminescent material can mix auxiliary energy transmission material such as green luminescent material mixes a certain amount of blue light emitting material, Yellow luminous material mixes a certain amount of green light luminescent material, red illuminating material mixes a certain amount of green or Yellow luminous material etc., is used for improving energy conversion efficiency.
Phosphor can be distributed to auxiliary filmogen such as tygon, Polyvinylchloride, polypropylene, polyacrylate, polymethylmethacrylate, polyvinyl alcohol (PVA), polyimide, polystyrene, polycarbonate, phenolics, alkyd resin, epoxy resin in polyurethane resin or other the known macromolecular materials, is made the processibility material.Can also add simultaneously other subsidiary function materials such as photosensitive material, cross-linked material, dispersion, solvent etc.
Luminescent material is when mixing use with non-luminescent material, and in order to prevent the quencher of luminescent material, the surface of luminescent material need be shifted to prevent the energy of luminescent material when exciting with covering layer of transparent organic or inorganic insulating material.
In order to improve luminescence efficiency, phosphor can be made crystal, cutting again, abrasive disc is prepared into photo-luminescent sheet.
The organic low molecular luminescent material:
Blue organic low molecular luminescent material comprises:
Cumarin 4 (coumarin4); Anthracene anthracene and derivant diphenylanthracene (DPA) thereof; 9,10-di-2-naphthylanthracene (AND) ， perylene (perylene) and derivant tetra (t-butyl) thereof-perylene (TBP); Pyrene and derivant thereof such as tetra (phenyl)-pyrene (TPP), distyrylarylene (DSA) and derivant (DSA-Ph) thereof; Fluorenes (fluorene) and derivant such as DBSF, stilbene and derivant thereof; TPD (triphenyldiamine); N, N ' diphenyl-N, N '-bis (1-naphthyl)-(1,1 '-biphenyl)-4,4 '-diamine (NPB); 4,4 '-N, N-dicarbazole-biphenyl (CBP); Oxazole derivatives (2-(4-biphenyl)-5-(4-tert-butyl)-1.3.4-ozadiazole) (PBD), 3-phenyl-4-(8-naphthyl)-5-phenyl-1,2,4-triazole (TAZ); Silole and derivant 2 thereof, 5-diarylsiloes; Dithienosiles; Aluminum metal complex B Alq; Iridium metal complex ridium (III) bis[(4,6-difluorophenyl)-pyridinato-N, C] picolinate (FIrpic) etc.
Green organic low molecular luminescent material comprises:
Cumarin Coumarin series derivates such as 3-(2-benzothiazolyl-tetrahydro)-7-(diethylamino)-2H-1-benzopyran-2-one (C6), C7, C545MT; The quinoxaline derivant
(6-N, N-dimethylamino-1-methyl-3-phenyl-1-H-Pyrazolo[3,4-b]-quinoline (PAQ-Net2), quinacridone quinacridone series derivates as
Dimethylquinaridone (DMQA); Naphthacene and derivant DPT thereof
(diphenyltetracene), the fluorene derivant, Al metal complex tris (8-hydroxy-quinoline)-aluminum (Alq), Mg metal complex Mgq, Zn metal complex ZnPBO, ZnPBT, Tb metal complex Tb (acac) 3Phen, iridium metal complex tris (2-phenylpyridine) iridium i.e. (Ir (ppy) 3; (2-phenylpyridine) iridium (III) acetylacetonate is (ppy) 3Ir (acac) etc.
Yellow organic low molecular luminescent material comprises:
Naphthacene derivant rubrene, three fragrant ammonia derivant DCTP, phenoxazine ketone (BTX), bis (8-hydroxy-quinoline)-zinc (Znq), Rohdamine B, Rohdamine 6G etc.Red organic low molecular luminescent material comprises:
Pyrans series derivates (4-(dicyano methylene)-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran) (DCM2); DCJTB; Three fragrant ammonia derivants 1,1 '-dicyano-substituted bis-styryl-naphthalene (BSN); NPAFN; Pentacene derivative diphenylpentacence (DPP); Rohdamine B, rohdamine 6G, Eu metal complex Eu (DBM) 3Bath, Eu (acac) 3Phen; Iridium metal complex bis (2-(2 '-benzo[4,5-a] thienyl) pyridinato-N, C) iridium (acetylacetonate) is Btp2Ir (acac) etc.
For the better energy transmission is an auxiliary dopant with preventing that concentration quenching, luminescent material from can mix use.Can mix auxiliary dopant TPD as blue light material DSA-Ph; Green light material C6 can mix DMQD, and red light material DCM2 can mix green glow C6 and gold-tinted adulterant such as rubrene etc.
Can join non-gripping altogether on high molecular main chain or the side chain to above-listed luminescent organic molecule by chemical synthesis as polypropylene, polyacrylate, polyvinyl alcohol (PVA), polyimide, polymethylmethacrylate, polystyrene, poly-carbonic acid, poly-silicones is on poly-silica resin or other the known macromolecular chains.
Luminous organic material also can dissolve, be distributed to auxiliary filmogen such as polypropylene, polyacrylate, polymethylmethacrylate, polyvinyl alcohol (PVA), polyimide, polystyrene, polycarbonate, phenolics, alkyd resin, epoxy resin in polyurethane resin or other the known macromolecular materials, is made the processibility material.Can also add simultaneously other subsidiary function materials such as photosensitive material, cross-linked material, dispersion, solvent etc.
The organic macromolecular LED material:
Light emitting-type is gripped macromolecular material altogether and is comprised polyphenyl PPP and derivant thereof, poly-fluorenes PF and derivant thereof, poly-to styrene support PPV and derivant P-PPV thereof, OR-PPV, MEH-PPV, CN-PPV etc., polyacetylene derivant PDPA, PHPA etc., polythiophene (PT) and derivant thereof, polypyridine PPY and derivant thereof, polyvinylpyridine PVY and derivant thereof etc., the multipolymer of above polymkeric substance, as the multipolymer (TFB) of poly-fluorenes and three fragrant ammonia, the multipolymer (F8BT) of poly-fluorenes and benzene sulphur diazole, the multipolymer F8T2 of poly-fluorenes and thiophene phenol; Dendritic (dendrimer), oligomer (oligomer) be film forming directly.
Light emitting-type is gripped macromolecule altogether and also can be added auxiliary type polymkeric substance (oligomer) and comprise polypropylene, polyacrylate, polymethylmethacrylate, polyvinyl alcohol (PVA), polyimide, polystyrene, polycarbonate, phenolics, alkyd resin, epoxy resin is made the processibility material in polyurethane resin or other the known macromolecular materials.Can also add simultaneously subsidiary function material such as photosensitive material, auxiliary light emission material, cross-linked material, dispersion, solvent etc.Can add light and thermal polymerization sexual function group to grip altogether on light emitting-type high polymer main chain or the side chain by chemical synthesis makes photosensitive and temperature-sensitive material.
The luminescent material that satisfies requirement of the present invention excites down at 350-550nm ultraviolet, blue green light, the peak value of blue light emitting is at 400-500nm, the peak value of green luminescence is at 500-550nm, the peak value of red light-emitting is at 600-700nm, half width is less than 70nm, more than 10%-90%, preferred value is more than the 50-90% to luminescent material in the photoluminescence quantum efficiencies of excitation light wave strong point.Colorful light-emitting film thickness scope is at 0.1 micron-1mm, and typical thickness is the 2-10 micron.Greater than 10, preferred value is 100-10000 in the optical density (OD) of effective excitation light wave strong point.Luminescent material has good thermostable type, air-stable type, excellent dissolution in macromolecule or dispersing characteristic etc.Auxiliary film forming macromolecular material is at visible region transparent (transmitance is more than 30%), and preferred value is more than 70%.
Luminescent material adopts directly film forming on substrate of PVD (physical vapour deposition (PVD)), CVD (chemical vapor deposition), Sol-Gel method, coating.Make pixel graphics with methods such as mask, photoetching (photolithography), laser lift-off, printing, transfer printing, inkjet printings.
Another kind of film build method is that luminescent material is disperseed, is dissolved in the transparent macromolecular material, and more than 30%, preferred value is more than 50%-90% in the 350-780nm transmitance for suitable main body macromolecular material.The phosphor particles diameter that is fit to is the 0.01-10 micron, and the diameter of optimization is below 0.1 micron.The proportional range of the adding of luminescent material is 0.1-99wt%, and preferred concentration range for is 1-20wt%.Available macromolecular material has tygon, Polyvinylchloride, polypropylene, polyacrylic acid, polypropylene cyanogen, polymethyl acrylate, polymethylmethacrylate, poly-epoxy acrylic, polyurethane acryloyl, polyester acrylate, polybutylene, polyvinyl alcohol (PVA), polyvinylpyrrolidone, polystyrene, polyvinyl acetate (PVA), polycarbonate, polyurethane, polyimide, phenolics, epoxy resin, poly-silicones, poly-silica resin, polysulfones, polyphenylene oxide, polyetherketone, acetate fiber, nitrocellulose etc., above mixture of polymers, multipolymer, oligomer.
The film forming macromolecular material also needs to add subsidiary function material such as polymer monomer, oligomer (oligomer), polymerization atarting material, cross-linked material, dispersion, coupling material, solvent etc.Polymerization atarting material such as 1-hydroxyl-hexamethylene phenyl ketone (HCPK); 2-hydroxy-2-methyl-1-phenyl-propane-1-ketone (HMPP) etc.Dispersion such as polyoxyethylene alkyl phenyl ether, polyvinyl alcohol (PVA) diester etc.Coupling material such as organic silane etc.Solvent comprises that aromatic hydrocarbon is like toluene, dimethylbenzene; Alcohols such as ethanol, isopropyl alcohol; Ketone such as acetone, cyclohexanone; Ester class such as ethyl acetate, butyl acetate, water etc.
The transmitance of material (luminescent material, macromolecular material, complementary material) in visible-range that forms is greater than 30%.The luminescent film thickness range is at 0.1 micron-1mm, and typical thickness is the 1-20 micron, and greater than 10, preferred value is 100-10000 in effective excitation light wave strong point optical density (OD).Adopt methods such as photoetching, laser lift-off, printing, transfer printing, inkjet printing to make pixel graphics.
Directly photoetching process is that luminescent material is scattered in the transparent photoresist, as the acrylic resin of optical polymerism, and the polyvinyl alcohol (PVA) of photocrosslinking reaction etc.The photo-polymerization type acrylic resin contains Photoepolymerizationinitiater initiater, acrylic monomers and oligomer, other polymkeric substance of adjustment film forming character and solvent etc.To the transparent photoresist that is mixed with phosphor apply respectively, expose (UV), develop remove photoresist, steps such as cleaning, dry solidification, preparation place RGB figure.The thin film physics characteristic depends on the selection and the incorporation of luminescent material, the particle size of material and surface treatment, process for dispersing etc.
Etching method is that phosphor is dispersed or dissolved in non-photosensitive resin such as the polyimide acid, forms figure with etching method.As the polyimide acid that is mixed with phosphor is coated on the substrate, apply photoresist (positivity or negativity) after the prebake conditions thereon, through overexposure (UV), development, etching (removing non-pixel region quarter), to remove photoresist, clean, solidify be that step such as polyimideization forms the RGB figure.
Print process is the Polyvinylchloride that luminescent material is dispersed in visible transparent, melamine resin, phenolics, alkyd resin, epoxy resin, polyurethane resin, vibrin, maleic acid resin, polymethylmethacrylate, polyacrylate, polycarbonate, polyvinyl alcohol (PVA), polyvinylpyrrolidone, hydroxyethyl cellulose, resin such as carboxymethyl cellulose and other functional auxiliary material etc. are made printing ink.Comprise contact or contactless by heat and laser transfer, printing as inkjet printing or other known printing processes preparation.
The colored hair mating plate also can have light absorbing function, changes outgoing spectrum and improves contrast, excitation and adjusting white balance by partially absorbing; One of method is the luminous colour film of preparation on traditional absorption-type coloured filter, also can mix to partially absorb the section bar material and improve contrast, excitation and adjustment photoluminescence efficiency in luminescent material.Isolated between luminescent material and the absorption-type material when adopting back one method with the insulativity material, as surface coverage layer of transparent organic or inorganic insulating material (microencapsulation), prevent that electron transfer between the material from promptly preventing the quencher of luminescent material at luminescent material and absorbing light material.
Embodiment 1
Light source adopts blue-ray LED as light source, and employing DMD is a photoswitch.Blue-light excited red light district, blue-light excited green Region and blue light see through the district respectively on photo-luminescent sheet, and when the photo-luminescent sheet of blue light by rotation, blue-light excited ruddiness excites green glow, sees through blue light, produces red, green, blue successively, sequentially penetrates at DMD.Red, green, blue and video image are in sequence, so when ruddiness was mapped on the DMD, eyeglass tilted to " opening " according to position and the intensity that red information should show, green and blue light and vision signal also are work like this.Human vision system is concentrated red, green, blue coloured light information and is seen a full-color image.By projecting lens, on image projection to a giant-screen that forms on the DMD surface.
Embodiment 2
Light source adopts blue-ray LED as light source, and the employing reflection type liquid crystal is a photoswitch.Blue-light excited red light district, blue-light excited green Region and blue light see through the district respectively on photo-luminescent sheet, when the photo-luminescent sheet of blue light by rotation, blue-light excited ruddiness, excite green glow, see through blue light, produce red, green, blue successively, sequentially penetrate at reflection type liquid crystal.It is the same that image forms principle.
Embodiment 3
Light source adopts the LED of purple light, employing DMD is a photoswitch, purple light excited red light district, purple light excited green Region and purple light excited blue light region are set respectively on photo-luminescent sheet, when the photo-luminescent sheet of purple light by rotation, excite ruddiness respectively, excite green glow, excite blue light, produce red, green, blue successively, sequentially penetrate on DMD.Form image with embodiment 1.
Embodiment 4
With embodiment 3 different be that photoswitch is a reflection type liquid crystal.
Embodiment 5
Light source adopts blue green light LED as light source, the photo-luminescent sheet of rotation is set in light path, green glow excites red light district, green glow to see through the district through district and blue light respectively on photo-luminescent sheet, when the photo-luminescent sheet of light by rotation, green glow excites ruddiness, sees through green glow, blue light, produce red, green, blue successively, sequentially penetrate at DMD.Form image with embodiment 1.
Embodiment 6
With embodiment 5 different be that photoswitch is a reflection type liquid crystal.
Embodiment 7
Photo-luminescent sheet is applied in the projector of 2 DMD, light source adopts blue light and ruddiness as light source, the rotation photo-luminescent sheet is set on blue light paths, photo-luminescent sheet is provided with blue light and sees through district and blue-light excited green Region, form blue light and green glow and be radiated at first DMD, on another sheet of ruddiness direct irradiation DMD, eyeglass tilts to " opening " according to position and the intensity that RGB look information should show, human vision system is concentrated red, green, blue coloured light information and seen a full-color image.
Embodiment 8
It is 2 reflection type liquid crystals that embodiment 7 is not both photoswitch.
Embodiment 9
In like manner purple light excited photo-luminescent sheet is applied on the projector of 2 DMD.
Embodiment 10
In like manner purple light excited photo-luminescent sheet is applied on the projector of 2 liquid crystal.
Claims (10)
1. projection display equipment, this device comprises: led light source, optical system, light switch function element, projection optical system and drive system; It is characterized in that being provided with in this projection display equipment the colored hair mating plate of band photoluminescence function, the colored hair mating plate is successively by embedded photoluminescent material, propping material, filter layer is formed, filter layer filters out the light of embedded photoluminescent material excitation wavelength, and propping material is by glass or inorganic fluorescent material or organic resin;
2. the colored hair mating plate is characterized in that according to claim 1, and the embedded photoluminescent material composition is chelate or the inorganic fluorescent material or the band defective inorganics crystal of organic fluorescence materials or organic fluorescence materials.
3. projection display device according to claim 1 is characterized in that led light source is the monochromatic light of wavelength 300 nanometers to 650 nanometer range.
4. monochromatic light as claimed in claim 3 is purple light, and the embedded photoluminescent material that it is characterized in that being provided with in the projection display equipment colored hair mating plate of band photoluminescence function is purple light excited blue light material, purple light excited red light material and purple light excited green light material.
5. monochromatic light as claimed in claim 3 is blue light, the colored hair mating plate that it is characterized in that in the projection display equipment band photoluminescence function is provided with the zone of 3 or 3 integral multiple, be respectively that blue light sees through the district, by the red light district of blue-light excited red light material covering and the green Region of blue-light excited green light material covering.
6. projection display device according to claim 1 is characterized in that led light source is the monochromatic light combinations of 2 kinds of wavelength 300 nanometers to 650 nanometer range.
7. monochromatic light as claimed in claim 6 is combined as blue light and green glow, and the colored hair mating plate that it is characterized in that being provided with in the projection display equipment band photoluminescence function is that blue light sees through the district, and green glow sees through the red light district that district, green glow excite red light material to cover.
8. monochromatic light as claimed in claim 6 is combined as blue light and ruddiness, and it is characterized in that being provided with in the projection display equipment colored hair mating plate of being with the photoluminescence function is that blue-light excited green Region, ruddiness see through the district and blue light sees through the district.
9. embedded photoluminescent material as claimed in claim 2 is conjugated polymers body or organic dyestuff or inorganic fluorescent powder, comprises the yttrium aluminum garnet that cerium activates, aluminate rare earth luminescent material, sulphide fluorescent material, phosphate phosphor; Organic dyestuff has 8-hydroxyquinoline aluminum, and coumarin 6 adopts the vacuum coating mode at the propping material surface filming.
10. colored hair mating plate according to claim 1, it is shaped as circle, and photoluminescence district aperture opening ratio is greater than seeing through the district, so that reach color balance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101953899A CN102023464A (en) | 2009-09-09 | 2009-09-09 | Projection display device and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101953899A CN102023464A (en) | 2009-09-09 | 2009-09-09 | Projection display device and manufacturing method thereof |
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| CN102023464A true CN102023464A (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101953899A Pending CN102023464A (en) | 2009-09-09 | 2009-09-09 | Projection display device and manufacturing method thereof |
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| CN (1) | CN102023464A (en) |
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Application publication date: 20110420 |